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Issue 5, 2010
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Chemical biology suggests a role for calcium signaling in mediating sustained JNK activation during apoptosis

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Abstract

Calcium (Ca2+) is used as a signaling molecule to regulate many cellular processes. Calcium signaling generally involves transient elevations of the concentration of free Ca2+ in the cytosol. More pronounced and sustained elevations of intracellular Ca2+ concentrations are observed during apoptosis (programmed cell death). These Ca2+ elevations have been shown to lead to the activation of proteases (calpains) and to changes in protein phosphorylation. Recent evidence, using chemical biology, has raised the possibility that calcium signaling is involved in sustained JNK activation during late phases of apoptosis. For at least some stimuli, calcium release leads to activation of calmodulin kinase II (CaMKII), apoptosis signaling kinase 1 (ASK1) and JNK. Calcium signaling may help to orchestrate the apoptotic response during the execution phase.

Graphical abstract: Chemical biology suggests a role for calcium signaling in mediating sustained JNK activation during apoptosis

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Publication details

The article was received on 07 Oct 2009, accepted on 06 Jan 2010 and first published on 09 Feb 2010


Article type: Review Article
DOI: 10.1039/B920805D
Citation: Mol. BioSyst., 2010,6, 767-774
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    Chemical biology suggests a role for calcium signaling in mediating sustained JNK activation during apoptosis

    S. Brnjic, M. H. Olofsson, A. M. Havelka and S. Linder, Mol. BioSyst., 2010, 6, 767
    DOI: 10.1039/B920805D

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